JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 24

MANUFACTURlNG recycling

World's first fully-recycled thermoplastic
composite application in aerospace
A rotorcraft access panel made of recycled thermoplastic composites was developed and successfully flight tested. Utilizing a novel
recycling route, the panel is lighter and more cost-effective.
Dr. ir. Ferrie W.J. van Hattum,
Professor Lightweight Structures
TPAC

T

o demonstrate a novel recycling
route for thermoplastic composites
(TPC), an integrally-stiffened access
panel door for a rotorcraft was selected for
detail design and testing, and actually flight
tested.
Access panel
The design, development and validation
followed the traditional building-block
approach. The material used is carbon
fibre-reinforced PPS from post-industrial
waste. This material originates from offcuts generated in the production of components for the same rotorcraft as the access
panel door will be mounted on. This scenario helps to control the traceability of the
recycled access panel door/scrap material.
The development of such an application
improves the logistics as well as the supply
and demand for recycled TPC. Material
data was gathered from mechanical tests
and used to predict the panel's strength and
stiffness. The stringer design was optimised
with regards to part stiffness and internal
stress distribution, using FEM simulations.
A critical design detail was selected and
tested for validation, i.e. flexural tests on
bolted joints. This section was included in a
preliminary manufacturing demonstrator,
along with other integrated design features
such as thickness transitions and various
types of stiffeners. The manufacturing
demonstrator enabled testing of the man-

24

ufacturing limits regarding design and
processability. The final panel door design
was successfully produced and tested on
the component level.
The proprietary remanufacturing process
includes three steps:
-	 shredding of waste to centimetre-long
flakes;
-	 simultaneous heating and low-shear
mixing;
-	 compression moulding in an isothermal
mould.
This offers the opportunity of retaining
long fibres and therefore reaching high
mechanical properties at the characteristic
short cycle times of isothermal compression moulding. In comparison to the cur-

Fig. 1: Access panel demonstrator

	 jec composites magazine / N°137 November - December 2020

rent carbon/epoxy hand lay-up solution,
the new product is lighter, significantly
more cost-effective and made of recycled
material (fibre and matrix). Figure 1 shows
the recycled thermoplastic access panels
that have been successfully flight tested.
TPC-Cycle recycling project
The innovation is part of the TPC-Cycle
recycling project, which started 3½ years
ago. With the growth of thermoplastic
composite applications and production, the
amount of generated waste increases and
reaches considerable volumes. Although
the recycling of thermoplastic composites
is theoretically viewed as feasible, it is not
observed in practice.



JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020

Cover
Edito
“We can change the way we envision global shipping overall”
Contents
NEWS
In brief
Agenda
BUSINESS
Human ressources - Skills requirements in the composite materials sector – the French example
Startup - Make lightness and performance affordable without compromising the environment
Offshore - GWEC: Asia Pacific to become the largest offshore wind market by 2030
MANUFACTURING
Additive manufacturing - The METHOD platform expands to support more materials,applications, and markets
Automation - One-shot manufacturing of cylindrical lattice structures for satellite applications
Recycling - World’s first fully-recycled thermoplastic composite application in aerospace
Additive molding - From large-scale continuous thermoplastic composites to mass production
FEATURE AUTOMOTIVE - Is it possible to do better?
FRP - Fully coupled processstructure analysis for automotive center floor panel
Honeycomb - Composite materials for lighter vehicles
Additive manufacturing - Transforming composite production processes with FDM additive manufacturing
EV - All-composite EV wheel moves to next development phase with pilot production
Security - The world’s fastest armoured car
Natural fibre - Sustainable composite solution for new Toyota LQ concept car
SOLUTIONS
Defence - Drones as wingmen
City - Composites for tomorrow’s cities
Maintenance - Degradation mechanism and maintenance of GFRP hydrochloric acid storage tanks
TECHNOLOGY
Bonding - Adhesion properties of bonded composite-to-aluminium joints using peel tests
Inside the lab - The University of Southern Queensland - Centre for Future Materials
Method - Weight and cost reduction with double-double laminates
Index
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JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Cover
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 2
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Edito
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - “We can change the way we envision global shipping overall”
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 5
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Contents
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 7
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - In brief
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 9
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Agenda
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Human ressources - Skills requirements in the composite materials sector – the French example
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 12
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 13
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Startup - Make lightness and performance affordable without compromising the environment
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 15
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 16
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Offshore - GWEC: Asia Pacific to become the largest offshore wind market by 2030
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 18
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Additive manufacturing - The METHOD platform expands to support more materials,applications, and markets
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 20
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Automation - One-shot manufacturing of cylindrical lattice structures for satellite applications
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 22
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 23
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Recycling - World’s first fully-recycled thermoplastic composite application in aerospace
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 25
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 26
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Additive molding - From large-scale continuous thermoplastic composites to mass production
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 28
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 29
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - FRP - Fully coupled processstructure analysis for automotive center floor panel
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 31
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 32
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 33
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Honeycomb - Composite materials for lighter vehicles
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 35
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 36
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Additive manufacturing - Transforming composite production processes with FDM additive manufacturing
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 38
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - EV - All-composite EV wheel moves to next development phase with pilot production
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 40
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Security - The world’s fastest armoured car
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 42
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 43
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Natural fibre - Sustainable composite solution for new Toyota LQ concept car
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 45
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 46
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Defence - Drones as wingmen
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 48
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 49
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - City - Composites for tomorrow’s cities
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 51
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Maintenance - Degradation mechanism and maintenance of GFRP hydrochloric acid storage tanks
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 53
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Bonding - Adhesion properties of bonded composite-to-aluminium joints using peel tests
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 55
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 56
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 57
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 58
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 59
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 60
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 61
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Inside the lab - The University of Southern Queensland - Centre for Future Materials
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 63
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Method - Weight and cost reduction with double-double laminates
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 65
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - Advertisers
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 67
JEC COMPOSITES MAGAZINE - Issue #137 - November/December 2020 - 68
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